FOCOM-Enabled Automation and Closed-Loop Control for Multi-Cloud O-Cloud Deployments

The O-RAN Alliance introduces the O2 interface to support interoperable infrastructure management across heterogeneous O-Cloud environments. However, achieving unified and scalable lifecycle management remains challenging due to the diversity of cloud platforms. This paper proposes a generic, O-RAN-compliant Infrastructure Management Services (IMS) framework that integrates an abstraction-layer-based design with automation tools to support seamless multi-cloud interoperability. A FOCOM-enabled mechanism is developed to automate the initialization of both O-Cloud and IMS instances. Experimental evaluations demonstrate the effectiveness of the proposed framework in three scenarios: (1) closed-loop control for energyefficient node management, (2) automated IMS and O-Cloud deployment, and (3) large-scale IMS performance under emulated O-Cloud topologies. Results show successful node scaling in response to workload thresholds, efficient IMS initialization within 306 seconds, and scalable IMS operation across 2,500 simulated nodes. These findings validate the framework's applicability to real-world O-RAN deployments and its potential for AI/ML-driven, cross-domain resource optimization.